Oil-burning device



June 7 1927.

1,631,688 H. H. MERCER 01L BURNING DEVICE Filed Dec. 25. 1920 i 50 fromthe hearth.

Patented June 7, 1927.

- UNITED STATES PATENT OFFICE.

HENRY MEROER, OE oLAREMONr, NEW HAMPSHIRE, ASSIGNOR TO SULLIVANMACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

i OIL-BURNING DEVICE.

Application filed December 23, 1920. Serial No; 432,858.

My invention relates to oil burning devices, and more particularly topro-heaters therefor.

i An object of my invention 1s to provide an improved oil burningdevice. Another object of my invention is to provlde an 1mproved oilburning device in whlch lmproved pre-heating means are provided. Afurther object of my invention is to provide mu- 1 proved means forpre-heating the oil and air supplied to an oil burner. A st ll furtherobject of my invention is to provide an 1mproved type of oil burn ngmechanism for use with a forging heating furnace of the oil firedtype.Other objects of my invention will appear in the course of thefollowing. specification. and the novel matter defined in the appendedclaims.

In the accompanying draw ngs I have shown for purposes of illustrationone form which my invention may assume 1n practice.

. In'these drawings,

Fig. 1 is a front elevatlon, with parts broken away, of a drill steelheatlng furnace provided with my improved pre-heating mechanism. 4

Fig. 2 is an end view of the same furnace with parts broken away.

my improved pro-heating mechanism employed with a burner of a forgingheatlng furnace of a welLknown commercial type. This furnace comprises asuitable housmg 1 in which a combustion chamber is arranged,

and a fuel oil burner 2 is mounted at one end of the housing of thecombustion chamber 3 and is adapted to discharge ltsspray of oillongitudinally of the combustlon chamber. The products of combustionpass upward by convection and outward through an opening 3 extendinglongitudinally of the combustion chamber, there being a hearth atarranged adjacent and on opposite sides of said longitudinal, opening.The

forgings are rested upon this hearth for heating by the products ofcombustion emergingfrom the flue 3. A suitable roof or covering 5 isprovided over the top of the furnace, being separated by a few inchesThis roof or covering 5 s composed of fire brick, asis also the hearth.The brick 6 forming said roof are also suitably separated and spacedapart as indicated at 7 to provide asecond flue through which theproducts of combustion may be d1scharged Forgings of any type as forexample, drill steels, are adapted to be inserted from the-front of thefurnace through the opening between the hearth 4 and the cover 5 and tohave the portions thereof which are to be heated disposed directly overthe due 3.

The oil burner 2 is of the type in which compressed air is employed asthe atomizing agent for the fuel. oil, this being possible by reason ofthe fact that in mines where such able to preheat the oil to asufficient temperature to reduce its viscosity in such manner as topermit its ready atomization. I

also find that the more highly heated (within'certainlimits) the airused for the purpose of atomization of the oil is, the better thecombustion and the more the heat made available as a result of thecombustion. lVhere it is possible to pro-heat the air with heat thatwould otherwise be wasted, it is 'especially'desirable to do so and inthe pres- 'ent improvement in devices of this type, I For purposes ofillustration, I have shown.

employ the heat that would otherwise be lost with the products ofcombustion discharged through the passage or flue 7 for the purpose ofpro-heating both the oil and the air. As these gases may be atarelatively high tempe'rature, I arrange a pipe extending across the topof the furnace as indicated at 8 through which the atomizing air isadapted to be supplied and place centrally within the pipe 8 a pipe 9 inwhich the fuel oil is conducted to the burner 2; The pipe 8 isarrangeddirectly over the opening 7 throughout the full length of thelatter and accord ingly the air moving through the pipe isprogressively'heated, and likewise gives up a portion of its heat to theoil within the pipe 9. The heat transfer in this mechanism is improvedby reason of the fact that the rate of flow ofthe oil and air onopposite poses of illustration and that the same may be embodied in.vgrrid is Qtl erjor ns Without I v depa r ting frjo'm it"sspirit orl thescope fo f the appended claims.

What himes new a desir qf sec re byLetters P'atent'i: 1 K i V 1. Thecor'iiliiiizition with it "furnace provided with a, combustion chamher zd g n oil burner and a relatively long narrow fiiie for theescape of thexvgete products o fcom bus tion disposed over said combustion chamvloeroff nezins disposedover (said-flue for f; pre lieating the fuel supply{to said .blllYIler in lud ng? C nduit. f g ea er di t r than 2- El mbintion wi h a rnace burner and a relatively long narrow fiueifor b usedinthe combustion of said fuel sin sat d furnace comprising a, conduittherefor zl flit ljin a central longitud l plane abo othe fln i v V y if-=3-. Thel combination Witha furnace pro .yid'ed Witllacombnsjtionichamber and an oil I burner endfla relat yely long narrowflue for tiQ jdispQsed vjl said co bustionje mbi r, of means rl p s d'Over. smd fl @91 ;heeti gthe oil d air supp ed to buimer C mp i ing co rc ly a a v pipe f r ai 0 1 nd t me e te ngif om nd nd f theifiue- 4. Thecombination withla furnace provided w th H -Q m S iQ LQ flm BI' nd alloi bu,1fnera1nd a relatively long narrow flue for theescz pe of theWaete produets o'lfcombusqndispo edover said combusti n hamber,

toot m ans di p ed ov r se clzfl ifpr pre heating the oil and airsupplied" to. said burner comprisingva pipe for conductingztir v o We e=bu n d d pos d l ngitud al y of vand d rec y over sai 'fiue nd" inpanaL 1elis the v h, an a pip t 'I nducting th oil t i bi m r'd spe ewith nzs d o i1 conducting pipe and eggtending through Qu n-th l ng theo yided: with a conibustion chamber and {an oil of means dispe v sad-flue or Pneheating :the giir and oil comprising independent supplypipes for eaclnloceted diiec l'y ov r ai -flu h P pe con ey ng oil l ene li ekled ya rhe h p pe fr d r ct p re e h west tpreduc s QifJ wet-i6- 331. QQm ee iQn wi h ,a l-funiizit rrre the. escape e the vieet 'iflvi i erlly e f e eating-with said pro- @Vldedivith a combustioncjhzunhennnd an Y011 and fin extendin lee itudiee y e cembu e l eh mher:$9 the 5 ,395 5 i th -.waste produc a 002mm 9 35 0 ibi sti n, 19f mea,preheat n h i inelll ii ng cem ti el "a n ed nduits lim n mm flue andsubjected to the heat therefrom'and:

" 7; "The coihbinzition' with "it furnace pro branches communiwith acombustion chamber and an oil burnerf discharging longitudinally thereofenc l e iiueentenning longitudinally. ofthe combustion chanlhe'r forftheescape of the mate product .1 mbue en; :e m n d ii ,poged over rspudgfiiiefand coextens ve therewith for ii'e l'ieating the oil and theeir snpf vided wifl e c mbie i if e wen plied to eaid burner includinggenerate 7 Q3133 f de elfi {1g th Pie-hea ted end n l to S i Lburnel-- vh i e time-hmi i f ingans is.-

pf ed long t d nally We? ld 118 for, m

" e -the i endi i eem'p an entei conduit, the, heat firom said finebgipg gp plie o d ir:supplyrchwebeesaectseperate conduits.deliveringsthe air, endeil ito thegescapjeofi-the esteproducts ofc01nbusthe burner.

videclW-i h ombust on hag be an ienq burner ClISCh ELIgIDg .lopgl tu iel "wher and a. relatively long nar ro w flue for the f sc p of th Was rdw zemb ist e r i i v f "1 a tending thl'oughoutthe lengthitl erepf ferV reeh eating the oil and air suppl ied tosziid I of means i di sposegdover .said ffiue end burner including concentric qilsajndnihsuptionelwmib v a d hFl-Y -g; s arate br ch e t nd t th ur ero 10. "Eliecgmbingition with eff ac p 50- ;Qi bu ner dis harging i engitl iieljthere of n a elat l l n ne oi fin fo th 3 1- "The omb natio wit fn-late Qiire Jildfid wit e embustie h ibfi end eil burner and a e atvely-me mee tflfi th es ne 10 the estep iediiqt t elS .eedpve veeiylfleie 1 m as v 991 4 1 et n-e theentuie le y ygth lei m a i .enilu s 11min-.hi?eeel1df 9 Vientiane" etitli I QRWSWQQ we l A I #11 f ihee mbweeeeev ih a lineag mgi edw t a cemb istie h m erl md supply c ambe i i ml lLee 5 9 wpply (-2 i i Vided with a combustion chamber and a burner and aflue for the escape of the waste products of combustion, of means forpreheating the fuel supplied to said burner ineluding concentricconduits disposed adjacent said flue and having branched connections atthe opposite ends thereof.

13. The combination with a furnace provided with a combustion chamberand an oil W burner and a flue for the escape of the waste products ofcombustion, of means for preheating the fuel supplied to said burnerincluding concentric oil and air supply conduits disposed over said flueand having branched connections at the opposite ends thereof, said airconduit being arranged outside of said oil conduit.

In testimony whereof I aflix my signature.

HENRY H. MERCER.

